'Protectiveness' definitions:

Definition of 'protectiveness'

From: WordNet
noun
A feeling of protective affection
noun
The quality of providing protection; "statistical evidence for the protectiveness of vaccination"

Definition of 'Protectiveness'

From: GCIDE
  • Protectiveness \Pro*tect"ive*ness\, n. The quality or state of being protective. --W. Pater. [1913 Webster]